Correlation & Regression (Edexcel A-Level Mathematics): Quizzes
📚Quizzes
Practise the questions
12 questions from this quiz
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Practise the questions
12 questions from this quiz
What is called?
What is called?
Product Moment Correlation Coefficient
What does indicate?
What does indicate?
Perfect linear positive correlation
What is the range for weak positive correlation?
What is the range for weak positive correlation?
What does indicate?
What does indicate?
No correlation
What is the range for weak negative correlation?
What is the range for weak negative correlation?
What does indicate?
What does indicate?
Perfect negative correlation
In strong negative correlation, is:
In strong negative correlation, is:
Close to
What important principle relates correlation to causation?
What important principle relates correlation to causation?
Correlation does not imply causation
A regression line passes through which point?
A regression line passes through which point?
(ar{x}, ar{y})
When is it appropriate to use a regression line?
When is it appropriate to use a regression line?
When the relationship appears linear
Where should regression predictions be made?
Where should regression predictions be made?
Within or close to the data range
What is extrapolation and is it reliable?
What is extrapolation and is it reliable?
Predictions beyond data; unreliable